Finding the Fourth Proportional to 1,057.34, 1,458.81 and 614.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,057.34 : 1,458.81 = 614.93 : x
2. Step 2: Convert to fraction form
   1,057.34/1,458.81 = 614.93/x
3. Step 3: Cross multiply
   1,057.34x = 1,458.81 × 614.93
4. Step 4: Simplify right side
   1,057.34x = 897,069.68
5. Step 5: Solve for x
   x = 897,069.68/1,057.34
6. Step 6: Final answer
   x = 848.42